PROSOFT MVI94-MCM I/O平臺(tái)
PROSOFT MVI94-MCM I/O平臺(tái)錯(cuò)誤句柄PROSOFT MVI94-MCM I/O平臺(tái)錯(cuò)誤句柄指定觸發(fā)器進(jìn)入和退出錯(cuò)誤狀態(tài)時(shí)要執(zhí)行的可選傳輸列表。觸發(fā)錯(cuò)誤狀態(tài)將由任何包含的標(biāo)簽訪問或傳輸失敗啟動(dòng)。成功完成觸發(fā)器后，將清除“錯(cuò)誤狀態(tài)”。指定的錯(cuò)誤句柄傳輸列表也可以使用單獨(dú)的周期觸發(fā)器執(zhí)行，以在需要/需要時(shí)刷新數(shù)據(jù)。傳輸列表將包含一個(gè)或多個(gè)消息命令。列表中的每個(gè)命令都將指定完成一個(gè)數(shù)據(jù)傳輸事務(wù)所需的所有信息，其方式與RA梯形圖邏輯中的MSG指令包含一條消息的所有信息非常相似。PROSOFT MVI94-MCM I/O平臺(tái)可以創(chuàng)建多個(gè)傳輸列表，通過將相關(guān)消息分組在一起，幫助您更好地組織通信任務(wù)。這也允許通過稱為觸發(fā)器或觸發(fā)器事件的數(shù)據(jù)標(biāo)記值的更改來控制消息組。
PROSOFT MVI94-MCM I/O平臺(tái)可以通過背板直接將數(shù)據(jù)傳輸?shù)桨惭b在同一機(jī)箱中的ControlLogix PAC，也可以從安裝在該機(jī)箱中的Control Logix PAC傳輸數(shù)據(jù)。這種跨ControlLogix背板通信的能力意味著PROSOFT MVI94-MCM I/O平臺(tái)還可以利用某些RA通信模塊和協(xié)議的“橋接”能力。6.1.2觸發(fā)器觸發(fā)器允許您通過鏈接到一個(gè)邏輯事件或一個(gè)或多個(gè)受監(jiān)控標(biāo)記的值的更改來控制PROSOFT MVI94-MCM I/O平臺(tái)中的消息執(zhí)行。觸發(fā)器可以鏈接到一個(gè)或多個(gè)傳輸列表。當(dāng)觸發(fā)條件為true時(shí)，關(guān)聯(lián)的一個(gè)或多個(gè)傳輸列表將執(zhí)行配置的數(shù)據(jù)傳輸命令。PROSOFT MVI94-MCM I/O平臺(tái)觸發(fā)器允許最終用戶對(duì)消息執(zhí)行進(jìn)行一定程度的邏輯控制。如果使用現(xiàn)有流程變量標(biāo)記或現(xiàn)有條件標(biāo)記作為觸發(fā)標(biāo)記，則正常流程執(zhí)行將觸發(fā)消息傳輸，而不需要額外的控制邏輯。有兩種類型的觸發(fā)器，PROSOFT MVI94-MCM I/O平臺(tái)包括ILX34_Trig和MM_Stats。這兩種類型都包括Actions和Error Handle，如下屏幕所示。操作指定觸發(fā)器觸發(fā)時(shí)要執(zhí)行的可選傳輸列表。
PROSOFT MVI94-MCM I/O平臺(tái)Each command in the list will specify all the information needed to complete one data transfer transaction,MVI94-MCM, in much the same way as a MSG instruction in RA ladder logic would contain all the information for one message. Multiple Transfer Lists may be created to help you better organize your communications tasks by allowing related messages to be grouped together. This also allows groups of messages to be controlled by changes of data tag values, called Triggers or trigger events.
Error Handle ILX56-MM Error Handle specifies an optional Transfer List to execute when the Trigger enters and exits the Error State. The Trigger Error State will be initiated by any contained Tag Access or transfer failure. The Error State will be cleared on a successful trigger completion. The specified Error Handle Transfer List can also be executed with a separate PeriodicMVI94-MCM, Trigger to refresh the data if desired/required.A Transfer List will contain one or more message commands.
Triggers Triggers allow you to control message execution in the ILX56-MM by linking to a logical event or the change of value of a monitored tag or tags. A Trigger may be linked to one or more Transfer Lists. When the trigger conditions are true, the associated Transfer List or Lists will execute the configured data transfer commands.Triggers allows end-users a measure of logic control over message execution. If existing process variable tags or existing conditional tags are used as trigger tags, normal process execution will trigger message transfers with no additional control logic needed.MVI94-MCM, There are two types of triggers consisting of ILX34_Trig, and MM_Stats. Both types include Actions and Error Handle as seen in the following screen.Actions specify an optional Transfer List to execute when the Trigger is fired.